Math, asked by unique9978, 2 months ago

factorise x^2 + 1/x^2 - 2

Answers

Answered by Anonymous

18

x^2 + 1/x^2 - 2 = x^2 + 1/x^2 - 2(x)(1/x)

= (x-1/x)^2 since (a-b)^2 gives a^2+b^2-2ab

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